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<?php |
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namespace Drupal\mongodb; |
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use Drupal\Component\Render\FormattableMarkup; |
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use Drupal\Core\Site\Settings; |
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/** |
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* Class DatabaseFactory. |
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* |
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* @package Drupal\mongodb |
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*/ |
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class DatabaseFactory { |
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/** |
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* The Client factory service. |
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* |
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* @var \Drupal\mongodb\ClientFactory |
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*/ |
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protected $clientFactory; |
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/** |
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* The 'mongodb' database settings array. |
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* |
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* @var string[][] |
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*/ |
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protected $settings; |
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/** |
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* Constructor. |
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* |
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* @param \Drupal\mongodb\ClientFactory $client_factory |
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* The Client factory service. |
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*/ |
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public function __construct(ClientFactory $client_factory, Settings $settings) { |
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$this->clientFactory = $client_factory; |
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$this->settings = $settings->get('mongodb')['databases']; |
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} |
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/** |
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* Return the MongoDB database matching an alias. |
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* |
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* @param string $alias |
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* The alias string, like "default". |
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* |
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* @return \MongoDB\Database|null |
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* The selected database, or NULL if an error occurred. |
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*/ |
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public function get($alias) { |
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if (!isset($this->settings[$alias])) { |
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throw new \InvalidArgumentException(new FormattableMarkup('Nonexistent database alias: @alias', [ |
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'@alias' => $alias, |
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])); |
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} |
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try { |
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list($client_alias, $database) = $this->settings[$alias]; |
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$client = $this->clientFactory->get($client_alias); |
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$result = $client->selectDatabase($database); |
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} |
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// Includes its descendant \MongoDb\Exception\InvalidArgumentException. |
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catch (\InvalidArgumentException $e) { |
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$result = NULL; |
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} |
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return $result; |
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} |
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/** |
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* Return the next integer ID in a sequence. For numeric ids in collections. |
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* |
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* @param string $sequenceId |
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* The name of the sequence, typically a collection name in the current |
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* database. |
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* @param int $value |
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* Optional. If given, the result will be at least 1 more that this. |
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* |
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* @return int |
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* The next id. It will be greater than $value, possibly by more than 1. |
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*/ |
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public function nextId($sequenceId = 'sequences', $value = 0) { |
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$collection = $this->get('default') |
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->selectCollection('sequences'); |
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$sequenceSelector = ['_id' => $sequenceId]; |
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// Force the minimum if given. |
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if ($value) { |
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$selector = $sequenceSelector + [ |
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'value' => ['$lt' => $value], |
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]; |
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$update = [ |
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'$set' => ['value' => $value], |
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]; |
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$collection->updateOne($selector, $update); |
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} |
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// Then increment it. |
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$update = [ |
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'$inc' => ['value' => 1], |
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]; |
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$options = [ |
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'upsert' => TRUE, |
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'returnDocument' => FindOneAndUpdate::RETURN_DOCUMENT_AFTER, |
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]; |
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$document = $collection->findOneAndUpdate($sequenceSelector, $update, $options); |
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$result = $document->value ?? 1; |
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return $result; |
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} |
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} |
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FGM /
mongodb
